Dial for watches or clocks



May 15, 1928.

S. MATHEZ DIAL FOR WATCHES OR CLOCKS Filed March 1, 1925 awuemtoz 152012416] (/l/afez' 35L; 61mm; I

Patented May 15, 1928.

UNITED STATES SAMUEL MATHEZ, OF BROOKLYN, NEW YORK.

DIAL FOR \VATCHES OR CLOCKS.

Application filed March 1, 1926. Serial No. 91,318.

This invention relates to watches or clocks of the type in which means are provided for indicating the seconds as well as the minutes and hours.

One of the main objects of my invention is to improve the appearance of the dial by so designing and mounting the second indicating mechanism that all of the hour numerals may appear on the dial. In the ordinary watch having a second hand, the hour numeral 6 is omitted, as the dial of the second hand comes closely adjacent to the lower edge of the main dial.

A further object of my invention is to 5 provide a second indicating member which although visible through a movement of only 180, serves to indicate the seconds throughout the full 360 of rotation.

In the accompanying drawing to which reference is to be had, I have illustrated two forms which my invention may assume, although itwill be evident that other forms may be designed within the scope of my invention. In the drawing:

Fig. l is a face view of a watch constructed in accordance with my invention.

Fig. 2 is a face view of the rotatable second indicating member.

ig. 3 is a section on the line 44 of Fig. 1.

I have illustrated my invention as applied to a watch having a main dial A over which the hour and minute hands B and C move in the ordinary manner, and by any ordinary form of clock movement.

The dial, instead of having a separate second dial therein, has a slot D which is curved through 180 and has marked along one side thereof the numerals from zero to thirty indicating the first thirty seconds of a minute, and the numerals thirty to sixty along the opposite side of the slot, indicating the second thirty seconds of the minute. Mounted on the usual pintle E I provide a member which has an indicating portion movable along the slot. This member is mounted beneath the main dial A, and has only a portion thereof visible through the slot.

In the form shown, this member is in the form of a disk F which has two indicating portions spaced 180 apart, and moved along the slot in succession. These indicating portions are a pointer G directed toward the outer edge of the slot, and a. pointer H directed toward the inner end of the slot.

For instance, the disk F may have a black ring J painted or otherwise formed thereon, and the pointer G may be in the form of a blacr: triangle extending outwardly from this ring, while the pointer H may be a notch in the outer side of the black ring constituting a white inwardly directed triangle. During one half of the revolution of the disk F. the pointer G will be visible through the slot and will be directed toward and move along the outer series of numerals zero to thirty, while during the next half revolution the pointer H will be visible and will be directed toward of numerals thirty G- and H are 180 disappear at thirty to sixty. As the pointers apart, each pointer will at the instant that the other one appears at the other numeral thirty. The 'disk F has two concentric zones, one black and the other white, and each having a. pointer portion directed into the other zone. Although this is a desirable construction, it is not essential to my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 2-- 1. A dial for watches or clocks having an arcuate slot extending through substantially 180, the center portion of the slot being spaced from and below the center of the dial and the ends of the slot curving downwardly in opposite directions toward the periphery, two concentric scales, one ex tending along the outer edge of said slot and the other along the inner edge of the slot, one of said scales being calibrated from 0 to 80 and the other from 30 to 60, and a disc mounted beneath said dial and adapted for rotation about the center of curvature of said slot, said disc having two pointer portions indicated thereon at diametrically opposite points adjacent to the periphery, one of said pointer portions being directed out war dly for registry with one of said scales and the other directed inwardly tor registry with the other of said scales.

2. A dial for watches or clocks having an arcuate slot extending through substantially 180, the center port-ion of the slot being adjacent to, but spaced from the center of the dial, and the end of said slot cuiying toward the periphery of the dial, two scales. one calibrated from 0 to 30 and disposed along one edge of said slot and the other calibrated from 30 to and disposed along the other edge of said slot, a rotatable disc the inner series beneath said dial and having its center coinwhereby one of said notches moves along cident with the center of curvature of said one of said scales and the other along the 10 slot, said disc having a pair of concentric other of said scales during the rotation of bands of different colors adjacent to the pe said disc.

' riphery thereof and beneath said slot each Signed at New York, in the county of of said bands having a notch therein of a New York and State of New York this 26th color corresponding to that of the other day of February, A. D. 1926. band and at diametrically opposite points, SAMUEL MATHEZ. 

